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CHAPTER 8

STUDY GUIDE FOR CONTENT MASTERY

Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
Covalent Bonding
Section 8.1 The Covalent Bond
In your textbook, read about the nature of covalent bonds.
Use each of the terms below just once to complete the passage.

covalent bond molecule sigma bond exothermic pi bond

When sharing of electrons occurs, the attachment between atoms that results is called a(n) (1) . When such an attachment is formed, bond dissociation energy is released, and the process is (2) . When two or more atoms bond by means of electron sharing, the resulting particle is called a(n) (3) . If the electrons shared are centered between the two atoms, the attachment is called a(n) (4) . If the sharing involves the overlap of parallel orbitals, the attachment is called a(n) (5) .

In your textbook, read about single and multiple bonds and bond strength.
Circle the letter of the choice that best completes the statement or answers the question. 6. In what form do elements such as hydrogen, nitrogen, and oxygen normally occur? a. as single atoms c. as molecules containing three atoms b. as molecules containing two atoms d. as molecules containing four atoms 7. How many electrons are shared in a double covalent bond? c. none b. one c. two d. four 8. Bond length is the distance between d. two molecules of the same substance. c. the nuclei of two attached atoms. e. the electrons in two attached atoms. d. the orbitals of two attached atoms. 9. Which of the following relationships relating to bond length is generally correct? f. the shorter the bond, the stronger the bond g. the shorter the bond, the weaker the bond h. the shorter the bond, the fewer the electrons in it i. the shorter the bond, the lower the bond dissociation energy

Study Guide for Content Mastery Chemistry: Matter and Change • Chapter 8 49

Name Date Class Name Date Class

CHAPTER 8

STUDY GUIDE FOR CONTENT MASTERY

CHAPTER 8

STUDY GUIDE FOR CONTENT MASTERY

Covalent Bonding
Section 8.1 The Covalent Bond
In your textbook, read about the nature of covalent bonds.

Section 8.2 Naming Molecules
In your textbook, read about how binary compounds and acids are named from their formulas.
For each statement below, write true or false.

Use each of the terms below just once to complete the passage.

covalent bond molecule sigma bond exothermic pi bond

When sharing of electrons occurs, the attachment between atoms that results is called

false false false 1.
Binary molecular compounds are generally composed of a metal and a nonmetal. 2. The second element in the formula of a binary compound is named using the suffix -ite. 3. The prefix tetra- indicates three atoms.

a(n) (1)

covalent bond

. When such an attachment is formed, bond dissociation true 4.
The prefix hexa- indicates six atoms.

energy is released, and the process is (2)

exothermic

. When two or more

true 5.
In naming the first element in a formula, the prefix mono- is not used.

atoms bond by means of electron sharing, the resulting particle is called a(n) true 6.
For binary acids, the hydrogen part of the compound is named using the

(3)

molecule

. If the electrons shared are centered between the two atoms, the

prefix hydro-.

attachment is called a(n) (4)

sigma bond

. If the sharing involves the overlap of

false 7.
An oxyacid contains only two elements.

parallel orbitals, the attachment is called a(n) (5) pi bond .

false 8.
If the name of the anion of an oxyacid ends in -ate, the acid name contains the suffix -ous.

In your textbook, read about single and multiple bonds and bond strength.
Circle the letter of the choice that best completes the statement or answers the question. 6. In what form do elements such as hydrogen, nitrogen, and oxygen normally occur?

In your textbook, read about naming molecular compounds and oxyacids. For each item in Column A, write the letter of the matching item in Column B. Column A Column B

a. as single atoms c. as molecules containing three atoms b. as molecules containing two atoms d. as molecules containing four atoms 7. How many electrons are shared in a double covalent bond? c. none b. one c. two d. four 8. Bond length is the distance between d. two molecules of the same substance. c. the nuclei of two attached atoms. e. the electrons in two attached atoms. d. the orbitals of two attached atoms. 9. Which of the following relationships relating to bond length is generally correct? f. the shorter the bond, the stronger the bond g. the shorter the bond, the weaker the bond h. the shorter the bond, the fewer the electrons in it i. the shorter the bond, the lower the bond dissociation energy c 9. CO i 10. CO2 g 11. H2CO3 e 12. NH3 b 13. N2O4 d 14. HNO2 f 15. HNO3 a 16. HBr h 17. HBrO3 a. hydrobromic acid b. dinitrogen tetroxide c. carbon monoxide d. nitrous acid e. ammonia f. nitric acid g. carbonic acid h. bromic acid i. carbon dioxide

Study Guide for Content Mastery Chemistry: Matter and Change • Chapter 9 49 50 Chemistry: Matter and Change • Chapter 9 Study Guide for Content Mastery

T182
Chemistry: Matter and Change
Study Guide for Content Mastery Answer Key
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
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